Type-writing machine



(No Model) P. DEMING.

TYPE WRITING MACHINE.

N5. 554,559. Patented Feb-18, 1896.

Qua/WM m m/ Inventor.

its posts.

UNiT n STATES ATENT FFICE.

PHILANDER DEMING, OF ALBANY, NEW YORK.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 554,659, dated February 18, 1896.

Application filed February 19, 1895. Serial No. 538,916. (No model.)

To aZZ whom it may concern.-

Be it known that I, PHILANDER DEMING, a citizen of the United States, residing at Albany, in the county of Albany and State of New York,have invented certain new and use f ul Improvements in Type-WVriting Machines, of which the following is a specification.

My invention relates to those type-writers which have an index and are operated with a stylus connected by a link to a spring-actuated revoluble type wheel or segment. In the use of these machines the hand holding the stylus turns the wheel in oppositionto the pull of the spring or yields it to the spring to turn the wheel in the other direction. The type are positioned for printing by placing the point of the stylus against posts or other stations placed in the index. I have described a type-writer with posts in the index in my application for a patent, filed January 5, 1894, Serial No. 495,803.

In the use of the type-writers referred to the manner of holding the stylus in the hand has some influence in determining the position of the type at the printing-point. It is my object to remedy this variation. I do this by placing the point or edge which engages the stations in the index upon the link instead of upon the stylus. The working point or edge being made a part of the link is always in the same position. It is not affected by the manner in which the stylus is held. The stylus is thus made a kind of handle used to place the link. It no longer engages the stations. It can be held, therefore, in any manner that is most convenient without affecting the position of the type at the printing-point. In this way the type is placed with greater accuracy for printing, and the hand can use the stylus with greater freedom.

My improvement will be understood by examining the drawings which are a part of this specification.

Figure 1 is a plan View showing the revoluble spring-actuated type-bearing segment, the link with its foot which engages the posts in the index, the stylus, and the index with The other figures show details and modifications.

In Fig. 1 is seen the revoluble spring-actuated type-bearing segment D pivoted at V. The annular spring 0 tends to turn the arm A toward the left; but the stylus S, held by the hand and connected to the arm A by the link L, may draw the arm A, in opposition to the spring, toward the right, thus causing the arm to pass over the index I.

The link L has a hook which passes easily through a hole in the arm A, thus making a loose connection which permits the free movement of the link. The link passes easily through a hole in the point of the stylus and hooks on, making a loose connection which permits the free movement of the stylus as it is used by the hand.

It will be observed that the link L has its direction when in use at substantially right angles to the radial line drawn from the post it touches with its footX to the centerV. A View of the link L is shown in Fig. 2. The foot X, which engages the posts in the index, is seen to be a short bar across the point of the hook. This bar is at right angles to the direction of the link, or is in effect part of a circumference of which the link is the radius. It makes no difference, therefore, what part of the bar touches the post in the ind ex. This fact gives freedom of touch.

In Fig. 3 a modification is shown. The stations in the index are not round posts but frets or flat posts extended in a substantially radial direction. They are at right angles to the direction of the link. A mere hook, therefore, without the cross-bar is sufficient for the foot of the link. The point of the hook may touch the part of the flat face of the post nearer to the operator or farther away, and the result will be the same.

A hinged joint may connect thehandle with the link, although the loose connection or universal joint is the better way. The handle with hinged joint is shown in Fig. 4. It may be noted that the top of the stylus which has the universal movement can be drawn over toward the operator and the stylus held in the hand like the handle of a knife. persons may prefer to use it in this way.

Substantially a post can be made by excavating the plate of the index and forming a long slope, with a wall at the left of it, as shown in stations K K of Fig. 3; but I prefer the actual posts P P, as shown in Figs. 1 and 3.

It is often desirable to use instead of a seg- Some ment the entire circumference of a circle for the type of an indeX-type-Writer, as in the Edison mimeograph type-Writer, now Well known. The gearing I use in this case is shown in Fig. 5. R is the shaft of the typebearing Wheel D, and W the gear-wheel on the shaft. M is the gear-segment. The arm Amoves over the index. The spring 0, which pulls against the stylus, is connected with the shaft R. The pull of the spring so takes up the shuck or lost motion of the train or gearin g as to give accurate results in the printing.

The pull on the link may well be from about one ounce to two ounces, the variation depending upon the Weight of the revolving parts used in various machines.

I find it Well to have the posts in the index about one-sixteenth of an inch in height and Well to have the foot of the link of about the same height, so that when the foot is placed on the index-plate its top Will be about level with the top of the posts.

I claim as new and desire to secure by Let-- ters Patent- 1. The combination in a type-writing machine of a spring-actuated revoluble typebearing member, a stylus and a connectinglink to rotate the type-bearing member in opposition to the pull of the spring, a foot on the link and an index-plate with posts set at intervals, the type-bearing member adapted to be positioned or regulated by placing the foot of the link against the sides of the posts, all substantially as described.

2. In a type-Writing machine the combination of a revoluble spring-actuated type-bearing member, a link connected with the typebearing member and having a handle hinged to it to turn the type-bearing member in opposition to the pull of the spring, a foot to the link and an index With posts set at intervals, the type-bearing member adapted to be positioned or regulated by placing the foot of the link against the sides of the posts, all substantially as described.

PHILANDER DEMING. Witnesses:

M. L. ROWE, JOHN S. WOLFE. 

